How has the public defender's office been appointed to represent defendant at his initial arraignment?

The public defender's office was appointed to represent defendant at his initial arraignment on September 29, 2008. On January 26, 2009, defendant moved, pursuant to People v. Marsden (1970) 2 Cal.3d 118 (Marsden), to have substitute counsel appointed. His motion was denied without prejudice to making it again after he had further opportunity to talk to counsel. On March 20, 2009, defendant renewed his motion, which was granted. New counsel was appointed, and it was this attorney who represented defendant through the remainder of the proceedings.